On a 1997 Ford Ranger , 4.0 liter OHV , V6 engine :
The DPFE sensor is on the drivers side of the engine , on the drivers side of the
upper " plastic " intake manifold
* it is rectangular in shape , made out of metal ( or plastic ) , approximately 3/4 of an inch thick , 3 " long ( plus the wings on each end for attaching ) 2 and 3/4 inches wide , and has ( 2 ) small diameter hoses running to it and a plug in electrical connection
The oil pressure sending unit is on the drivers side of the engine below the power steering pump on the 4.0 liter V6 in a 1997 Ford Ranger
40L = 40000cm3
It's part of the fuel pump assembly located inside the gas tank.
the oil pressure switch is located on the left side below the power steering pump. it is about 1.5 - 2 inches and about 2.5 inches long
On a car, 40 liters.
The pilot-operator of the Cessna 40l which fatally crashed.
No door. You have to drop the tank.
Look under vehicle foolow the fuel line from the tank
If it's not the crank sensor, it's probably the ECM, and that's bad. Try you crank shaft position sensor, if it is bad the engine will not run. It's on the back of the engine just below the vavle cover on the drivers side You can also try the ignition pickup. It's a little back plastic plate that sits on top of the distributor when you take the cap off.
I'd vote for the injectors. Try a professional fuel injection cleaning. Occasionally run it up to 3500 rpm for 30 seconds in low gear to keep breaking up the carbon deposits.
Also check the air intake hose. Ours had a small hole in it and a worn seal at one end. Replaced it. Instant fix. My # 1 guess would be a vacuum leak, as this truck is 14 years old. Replace every single vacuum hose. Very inexpensive. Do them one at a time as to not get confused. Of course then there is plugs, plug wires, distributor cap, rotor, O2 sensor, intake manifold gasket leak, blown head gasket, and a possible burnt valve.
Get a Haynes or Chiltons manual from an auto parts store and don't forget to label everything.